Summary data stasiun Changping

Dataset statistics

Number of variables	18
Number of observations	35064
Missing cells	5166
Missing cells (%)	0.8%
Duplicate rows	0
Duplicate rows (%)	0.0%
Total size in memory	4.8 MiB
Average record size in memory	144.0 B

Variable types

Numeric	15
Categorical	3

Alerts

`station` has constant value ""	Constant
`CO` is highly overall correlated with `NO2` and 3 other fields	High correlation
`DEWP` is highly overall correlated with `PRES` and 1 other fields	High correlation
`NO2` is highly overall correlated with `CO` and 3 other fields	High correlation
`No` is highly overall correlated with `year`	High correlation
`O3` is highly overall correlated with `NO2` and 2 other fields	High correlation
`PM10` is highly overall correlated with `CO` and 2 other fields	High correlation
`PM2.5` is highly overall correlated with `CO` and 2 other fields	High correlation
`PRES` is highly overall correlated with `DEWP` and 2 other fields	High correlation
`SO2` is highly overall correlated with `CO`	High correlation
`TEMP` is highly overall correlated with `DEWP` and 2 other fields	High correlation
`year` is highly overall correlated with `No`	High correlation
`PM2.5` has 774 (2.2%) missing values	Missing
`PM10` has 582 (1.7%) missing values	Missing
`SO2` has 628 (1.8%) missing values	Missing
`NO2` has 667 (1.9%) missing values	Missing
`CO` has 1521 (4.3%) missing values	Missing
`O3` has 604 (1.7%) missing values	Missing
`RAIN` is highly skewed (γ1 = 29.5690635)	Skewed
`No` is uniformly distributed	Uniform
`No` has unique values	Unique
`hour` has 1461 (4.2%) zeros	Zeros
`RAIN` has 33663 (96.0%) zeros	Zeros
`WSPM` has 417 (1.2%) zeros	Zeros

Reproduction

Analysis started	2024-03-08 05:07:34.521396
Analysis finished	2024-03-08 05:08:14.554565
Duration	40.03 seconds
Software version	ydata-profiling vv4.6.5
Download configuration	config.json

No
Real number (ℝ)

HIGH CORRELATION UNIFORM UNIQUE

Distinct	35064
Distinct (%)	100.0%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	17532.5

Minimum	1
Maximum	35064
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	1
5-th percentile	1754.15
Q1	8766.75
median	17532.5
Q3	26298.25
95-th percentile	33310.85
Maximum	35064
Range	35063
Interquartile range (IQR)	17531.5

Descriptive statistics

Standard deviation	10122.249
Coefficient of variation (CV)	0.57734204
Kurtosis	-1.2
Mean	17532.5
Median Absolute Deviation (MAD)	8766
Skewness	0
Sum	6.1475958 × 10⁸
Variance	1.0245993 × 10⁸
Monotonicity	Strictly increasing

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
1	1	< 0.1%
23379	1	< 0.1%
23373	1	< 0.1%
23374	1	< 0.1%
23375	1	< 0.1%
23376	1	< 0.1%
23377	1	< 0.1%
23378	1	< 0.1%
23380	1	< 0.1%
23422	1	< 0.1%
Other values (35054)	35054	> 99.9%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
1	1	< 0.1%
2	1	< 0.1%
3	1	< 0.1%
4	1	< 0.1%
5	1	< 0.1%
6	1	< 0.1%
7	1	< 0.1%
8	1	< 0.1%
9	1	< 0.1%
10	1	< 0.1%

Value	Count	Frequency (%)
35064	1	< 0.1%
35063	1	< 0.1%
35062	1	< 0.1%
35061	1	< 0.1%
35060	1	< 0.1%
35059	1	< 0.1%
35058	1	< 0.1%
35057	1	< 0.1%
35056	1	< 0.1%
35055	1	< 0.1%

year
Categorical

HIGH CORRELATION

Distinct	5
Distinct (%)	< 0.1%
Missing	0
Missing (%)	0.0%
Memory size	274.1 KiB

2016	8784
2014	8760
2015	8760
2013	7344
2017	1416

Length

Max length	4
Median length	4
Mean length	4
Min length	4

Characters and Unicode

Total characters	140256
Distinct characters	8
Distinct categories	1 ?
Distinct scripts	1 ?
Distinct blocks	1 ?

The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique	0 ?
Unique (%)	0.0%

Sample

1st row	2013
2nd row	2013
3rd row	2013
4th row	2013
5th row	2013

Common Values

Value	Count	Frequency (%)
2016	8784	25.1%
2014	8760	25.0%
2015	8760	25.0%
2013	7344	20.9%
2017	1416	4.0%

Length

Histogram of lengths of the category

Common Values (Plot)

Value	Count	Frequency (%)
2016	8784	25.1%
2014	8760	25.0%
2015	8760	25.0%
2013	7344	20.9%
2017	1416	4.0%

Most occurring characters

Value	Count	Frequency (%)
2	35064	25.0%
0	35064	25.0%
1	35064	25.0%
6	8784	6.3%
4	8760	6.2%
5	8760	6.2%
3	7344	5.2%
7	1416	1.0%

Most occurring categories

Value	Count	Frequency (%)
Decimal Number	140256	100.0%

Most frequent character per category

Decimal Number

Value	Count	Frequency (%)
2	35064	25.0%
0	35064	25.0%
1	35064	25.0%
6	8784	6.3%
4	8760	6.2%
5	8760	6.2%
3	7344	5.2%
7	1416	1.0%

Most occurring scripts

Value	Count	Frequency (%)
Common	140256	100.0%

Most frequent character per script

Common

Value	Count	Frequency (%)
2	35064	25.0%
0	35064	25.0%
1	35064	25.0%
6	8784	6.3%
4	8760	6.2%
5	8760	6.2%
3	7344	5.2%
7	1416	1.0%

Most occurring blocks

Value	Count	Frequency (%)
ASCII	140256	100.0%

Most frequent character per block

ASCII

Value	Count	Frequency (%)
2	35064	25.0%
0	35064	25.0%
1	35064	25.0%
6	8784	6.3%
4	8760	6.2%
5	8760	6.2%
3	7344	5.2%
7	1416	1.0%

month
Real number (ℝ)

Distinct	12
Distinct (%)	< 0.1%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	6.5229295

Minimum	1
Maximum	12
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	1
5-th percentile	1
Q1	4
median	7
Q3	10
95-th percentile	12
Maximum	12
Range	11
Interquartile range (IQR)	6

Descriptive statistics

Standard deviation	3.4487524
Coefficient of variation (CV)	0.52871219
Kurtosis	-1.2080577
Mean	6.5229295
Median Absolute Deviation (MAD)	3
Skewness	-0.0092942217
Sum	228720
Variance	11.893893
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=12)

Value	Count	Frequency (%)
3	2976	8.5%
5	2976	8.5%
7	2976	8.5%
8	2976	8.5%
10	2976	8.5%
12	2976	8.5%
1	2976	8.5%
4	2880	8.2%
6	2880	8.2%
9	2880	8.2%
Other values (2)	5592	15.9%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
1	2976	8.5%
2	2712	7.7%
3	2976	8.5%
4	2880	8.2%
5	2976	8.5%
6	2880	8.2%
7	2976	8.5%
8	2976	8.5%
9	2880	8.2%
10	2976	8.5%

Value	Count	Frequency (%)
12	2976	8.5%
11	2880	8.2%
10	2976	8.5%
9	2880	8.2%
8	2976	8.5%
7	2976	8.5%
6	2880	8.2%
5	2976	8.5%
4	2880	8.2%
3	2976	8.5%

day
Real number (ℝ)

Distinct	31
Distinct (%)	0.1%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	15.729637

Minimum	1
Maximum	31
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	1
5-th percentile	2
Q1	8
median	16
Q3	23
95-th percentile	29
Maximum	31
Range	30
Interquartile range (IQR)	15

Descriptive statistics

Standard deviation	8.8002175
Coefficient of variation (CV)	0.55946729
Kurtosis	-1.1940295
Mean	15.729637
Median Absolute Deviation (MAD)	8
Skewness	0.0067598056
Sum	551544
Variance	77.443829
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=31)

Value	Count	Frequency (%)
1	1152	3.3%
2	1152	3.3%
28	1152	3.3%
27	1152	3.3%
26	1152	3.3%
25	1152	3.3%
24	1152	3.3%
23	1152	3.3%
22	1152	3.3%
21	1152	3.3%
Other values (21)	23544	67.1%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
1	1152	3.3%
2	1152	3.3%
3	1152	3.3%
4	1152	3.3%
5	1152	3.3%
6	1152	3.3%
7	1152	3.3%
8	1152	3.3%
9	1152	3.3%
10	1152	3.3%

Value	Count	Frequency (%)
31	672	1.9%
30	1056	3.0%
29	1080	3.1%
28	1152	3.3%
27	1152	3.3%
26	1152	3.3%
25	1152	3.3%
24	1152	3.3%
23	1152	3.3%
22	1152	3.3%

hour
Real number (ℝ)

ZEROS

Distinct	24
Distinct (%)	0.1%
Missing	0
Missing (%)	0.0%
Infinite	0
Infinite (%)	0.0%
Mean	11.5

Minimum	0
Maximum	23
Zeros	1461
Zeros (%)	4.2%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	0
5-th percentile	1
Q1	5.75
median	11.5
Q3	17.25
95-th percentile	22
Maximum	23
Range	23
Interquartile range (IQR)	11.5

Descriptive statistics

Standard deviation	6.9222853
Coefficient of variation (CV)	0.60193785
Kurtosis	-1.2041745
Mean	11.5
Median Absolute Deviation (MAD)	6
Skewness	0
Sum	403236
Variance	47.918033
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=24)

Value	Count	Frequency (%)
0	1461	4.2%
1	1461	4.2%
22	1461	4.2%
21	1461	4.2%
20	1461	4.2%
19	1461	4.2%
18	1461	4.2%
17	1461	4.2%
16	1461	4.2%
15	1461	4.2%
Other values (14)	20454	58.3%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	1461	4.2%
1	1461	4.2%
2	1461	4.2%
3	1461	4.2%
4	1461	4.2%
5	1461	4.2%
6	1461	4.2%
7	1461	4.2%
8	1461	4.2%
9	1461	4.2%

Value	Count	Frequency (%)
23	1461	4.2%
22	1461	4.2%
21	1461	4.2%
20	1461	4.2%
19	1461	4.2%
18	1461	4.2%
17	1461	4.2%
16	1461	4.2%
15	1461	4.2%
14	1461	4.2%

PM2.5
Real number (ℝ)

HIGH CORRELATION MISSING

Distinct	481
Distinct (%)	1.4%
Missing	774
Missing (%)	2.2%
Infinite	0
Infinite (%)	0.0%
Mean	71.099743

Minimum	2
Maximum	882
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	2
5-th percentile	7
Q1	18
median	46
Q3	100
95-th percentile	222
Maximum	882
Range	880
Interquartile range (IQR)	82

Descriptive statistics

Standard deviation	72.326926
Coefficient of variation (CV)	1.01726
Kurtosis	4.7964482
Mean	71.099743
Median Absolute Deviation (MAD)	33
Skewness	1.8753985
Sum	2438010.2
Variance	5231.1842
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
11	706	2.0%
12	699	2.0%
3	690	2.0%
10	687	2.0%
13	682	1.9%
14	679	1.9%
8	599	1.7%
9	597	1.7%
15	576	1.6%
16	535	1.5%
Other values (471)	27840	79.4%
(Missing)	774	2.2%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
2	3	< 0.1%
3	690	2.0%
4	216	0.6%
5	319	0.9%
6	435	1.2%
7	529	1.5%
8	599	1.7%
9	597	1.7%
10	687	2.0%
11	706	2.0%

Value	Count	Frequency (%)
882	1	< 0.1%
662	1	< 0.1%
596	1	< 0.1%
581	1	< 0.1%
576	1	< 0.1%
560	1	< 0.1%
557	1	< 0.1%
552	1	< 0.1%
544	1	< 0.1%
540	1	< 0.1%

PM10
Real number (ℝ)

HIGH CORRELATION MISSING

Distinct	562
Distinct (%)	1.6%
Missing	582
Missing (%)	1.7%
Infinite	0
Infinite (%)	0.0%
Mean	94.657871

Minimum	2
Maximum	999
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	2
5-th percentile	12
Q1	34
median	72
Q3	131
95-th percentile	256
Maximum	999
Range	997
Interquartile range (IQR)	97

Descriptive statistics

Standard deviation	83.441738
Coefficient of variation (CV)	0.88150872
Kurtosis	7.891491
Mean	94.657871
Median Absolute Deviation (MAD)	44
Skewness	2.0484208
Sum	3263992.7
Variance	6962.5237
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
6	353	1.0%
22	349	1.0%
18	348	1.0%
24	346	1.0%
19	333	0.9%
20	328	0.9%
26	327	0.9%
13	326	0.9%
25	325	0.9%
15	325	0.9%
Other values (552)	31122	88.8%
(Missing)	582	1.7%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
2	2	< 0.1%
3	44	0.1%
4	18	0.1%
5	181	0.5%
6	353	1.0%
7	171	0.5%
8	218	0.6%
9	212	0.6%
10	266	0.8%
11	248	0.7%

Value	Count	Frequency (%)
999	1	< 0.1%
992	1	< 0.1%
980	1	< 0.1%
976	1	< 0.1%
933	1	< 0.1%
930	1	< 0.1%
858	2	< 0.1%
793	1	< 0.1%
775	1	< 0.1%
770	2	< 0.1%

SO2
Real number (ℝ)

HIGH CORRELATION MISSING

Distinct	294
Distinct (%)	0.9%
Missing	628
Missing (%)	1.8%
Infinite	0
Infinite (%)	0.0%
Mean	14.958906

Minimum	0.2856
Maximum	310
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	0.2856
5-th percentile	2
Q1	2
median	7
Q3	18
95-th percentile	58
Maximum	310
Range	309.7144
Interquartile range (IQR)	16

Descriptive statistics

Standard deviation	20.975331
Coefficient of variation (CV)	1.4021969
Kurtosis	12.081466
Mean	14.958906
Median Absolute Deviation (MAD)	5
Skewness	2.9385808
Sum	515124.87
Variance	439.96453
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
2	9215	26.3%
3	2732	7.8%
4	1734	4.9%
5	1498	4.3%
6	1394	4.0%
7	1186	3.4%
8	1159	3.3%
9	995	2.8%
10	831	2.4%
11	753	2.1%
Other values (284)	12939	36.9%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0.2856	11	< 0.1%
0.5712	7	< 0.1%
0.8568	4	< 0.1%
1	377	1.1%
1.1424	7	< 0.1%
1.428	7	< 0.1%
1.7136	10	< 0.1%
1.9992	11	< 0.1%
2	9215	26.3%
2.2	1	< 0.1%

Value	Count	Frequency (%)
310	1	< 0.1%
257	1	< 0.1%
235	1	< 0.1%
215	1	< 0.1%
195	1	< 0.1%
192	2	< 0.1%
186	1	< 0.1%
184	1	< 0.1%
182	1	< 0.1%
180	1	< 0.1%

NO2
Real number (ℝ)

HIGH CORRELATION MISSING

Distinct	459
Distinct (%)	1.3%
Missing	667
Missing (%)	1.9%
Infinite	0
Infinite (%)	0.0%
Mean	44.182086

Minimum	1.8477
Maximum	226
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	1.8477
5-th percentile	10
Q1	22
median	36
Q3	60.3582
95-th percentile	102
Maximum	226
Range	224.1523
Interquartile range (IQR)	38.3582

Descriptive statistics

Standard deviation	29.519796
Coefficient of variation (CV)	0.66813949
Kurtosis	1.5530672
Mean	44.182086
Median Absolute Deviation (MAD)	17
Skewness	1.1932586
Sum	1519731.2
Variance	871.41837
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
20	684	2.0%
24	675	1.9%
25	673	1.9%
22	668	1.9%
17	661	1.9%
29	652	1.9%
21	650	1.9%
23	638	1.8%
18	630	1.8%
27	622	1.8%
Other values (449)	27844	79.4%
(Missing)	667	1.9%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
1.8477	1	< 0.1%
2	117	0.3%
2.2583	1	< 0.1%
3	55	0.2%
4	119	0.3%
4.7219	1	< 0.1%
5	115	0.3%
5.1325	1	< 0.1%
5.5431	1	< 0.1%
6	185	0.5%

Value	Count	Frequency (%)
226	1	< 0.1%
208	1	< 0.1%
205	1	< 0.1%
203	1	< 0.1%
202	1	< 0.1%
201	1	< 0.1%
199	3	< 0.1%
198	1	< 0.1%
196	3	< 0.1%
195	3	< 0.1%

CO
Real number (ℝ)

HIGH CORRELATION MISSING

Distinct	115
Distinct (%)	0.3%
Missing	1521
Missing (%)	4.3%
Infinite	0
Infinite (%)	0.0%
Mean	1152.3013

Minimum	100
Maximum	10000
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	100
5-th percentile	300
Q1	500
median	800
Q3	1400
95-th percentile	3300
Maximum	10000
Range	9900
Interquartile range (IQR)	900

Descriptive statistics

Standard deviation	1103.0563
Coefficient of variation (CV)	0.95726373
Kurtosis	10.427141
Mean	1152.3013
Median Absolute Deviation (MAD)	400
Skewness	2.7280862
Sum	38651644
Variance	1216733.2
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
500	3193	9.1%
400	3170	9.0%
600	2800	8.0%
300	2763	7.9%
700	2477	7.1%
800	1978	5.6%
900	1595	4.5%
1000	1488	4.2%
1100	1358	3.9%
200	1333	3.8%
Other values (105)	11388	32.5%
(Missing)	1521	4.3%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
100	331	0.9%
200	1333	3.8%
300	2763	7.9%
400	3170	9.0%
500	3193	9.1%
600	2800	8.0%
700	2477	7.1%
800	1978	5.6%
900	1595	4.5%
1000	1488	4.2%

Value	Count	Frequency (%)
10000	2	< 0.1%
9900	3	< 0.1%
9800	1	< 0.1%
9700	1	< 0.1%
9500	5	< 0.1%
9400	2	< 0.1%
9300	2	< 0.1%
9200	1	< 0.1%
9100	3	< 0.1%
9000	2	< 0.1%

O3
Real number (ℝ)

HIGH CORRELATION MISSING

Distinct	886
Distinct (%)	2.6%
Missing	604
Missing (%)	1.7%
Infinite	0
Infinite (%)	0.0%
Mean	57.940003

Minimum	0.2142
Maximum	429
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	0.2142
5-th percentile	2
Q1	15.6366
median	46
Q3	80
95-th percentile	173
Maximum	429
Range	428.7858
Interquartile range (IQR)	64.3634

Descriptive statistics

Standard deviation	54.316674
Coefficient of variation (CV)	0.93746413
Kurtosis	3.0277304
Mean	57.940003
Median Absolute Deviation (MAD)	32
Skewness	1.5832546
Sum	1996612.5
Variance	2950.3011
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
2	2273	6.5%
3	829	2.4%
4	717	2.0%
5	584	1.7%
6	576	1.6%
8	457	1.3%
7	450	1.3%
9	399	1.1%
10	357	1.0%
38	332	0.9%
Other values (876)	27486	78.4%
(Missing)	604	1.7%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0.2142	4	< 0.1%
0.4284	3	< 0.1%
0.6426	6	< 0.1%
0.8568	3	< 0.1%
1	96	0.3%
1.071	9	< 0.1%
1.2852	7	< 0.1%
1.4994	9	< 0.1%
1.7136	7	< 0.1%
1.9278	11	< 0.1%

Value	Count	Frequency (%)
429	1	< 0.1%
413	1	< 0.1%
387	1	< 0.1%
366	1	< 0.1%
365	1	< 0.1%
363	1	< 0.1%
360.4986	1	< 0.1%
359	1	< 0.1%
348	2	< 0.1%
346	1	< 0.1%

TEMP
Real number (ℝ)

HIGH CORRELATION

Distinct	998
Distinct (%)	2.9%
Missing	53
Missing (%)	0.2%
Infinite	0
Infinite (%)	0.0%
Mean	13.686111

Minimum	-16.6
Maximum	41.4
Zeros	186
Zeros (%)	0.5%
Negative	5115
Negative (%)	14.6%
Memory size	274.1 KiB

Quantile statistics

Minimum	-16.6
5-th percentile	-4
Q1	3.4
median	14.7
Q3	23.3
95-th percentile	30.7
Maximum	41.4
Range	58
Interquartile range (IQR)	19.9

Descriptive statistics

Standard deviation	11.365313
Coefficient of variation (CV)	0.83042675
Kurtosis	-1.134788
Mean	13.686111
Median Absolute Deviation (MAD)	9.7
Skewness	-0.098545321
Sum	479164.44
Variance	129.17034
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
3	240	0.7%
1	224	0.6%
-2	205	0.6%
2	202	0.6%
0	186	0.5%
-1	169	0.5%
4	149	0.4%
21.5	145	0.4%
22.9	142	0.4%
24.3	137	0.4%
Other values (988)	33212	94.7%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
-16.6	1	< 0.1%
-16.5	1	< 0.1%
-16.2	1	< 0.1%
-16.1	1	< 0.1%
-15.9	1	< 0.1%
-15.8	2	< 0.1%
-15.6	1	< 0.1%
-15.5	2	< 0.1%
-15.4	2	< 0.1%
-15.3	3	< 0.1%

Value	Count	Frequency (%)
41.4	1	< 0.1%
41	1	< 0.1%
40.5	2	< 0.1%
40	1	< 0.1%
39.8	2	< 0.1%
39.2	1	< 0.1%
38.9	1	< 0.1%
38.5	1	< 0.1%
38.4	1	< 0.1%
38.3	1	< 0.1%

PRES
Real number (ℝ)

HIGH CORRELATION

Distinct	592
Distinct (%)	1.7%
Missing	50
Missing (%)	0.1%
Infinite	0
Infinite (%)	0.0%
Mean	1007.7603

Minimum	982.4
Maximum	1036.5
Zeros	0
Zeros (%)	0.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	982.4
5-th percentile	992.4
Q1	999.3
median	1007.4
Q3	1016
95-th percentile	1024.3
Maximum	1036.5
Range	54.1
Interquartile range (IQR)	16.7

Descriptive statistics

Standard deviation	10.225664
Coefficient of variation (CV)	0.010146921
Kurtosis	-0.91808004
Mean	1007.7603
Median Absolute Deviation (MAD)	8.4
Skewness	0.10384267
Sum	35285718
Variance	104.56419
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
1019	295	0.8%
1021	286	0.8%
1018	266	0.8%
1015	246	0.7%
1022	242	0.7%
1020	241	0.7%
1017	235	0.7%
1016	234	0.7%
1014	213	0.6%
1011	198	0.6%
Other values (582)	32558	92.9%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
982.4	1	< 0.1%
982.7	1	< 0.1%
982.8	1	< 0.1%
982.9	1	< 0.1%
983	1	< 0.1%
983.2	2	< 0.1%
983.3	1	< 0.1%
983.5	2	< 0.1%
983.7	2	< 0.1%
984	2	< 0.1%

Value	Count	Frequency (%)
1036.5	1	< 0.1%
1036.3	1	< 0.1%
1036.2	1	< 0.1%
1036.1	1	< 0.1%
1036	3	< 0.1%
1035.9	3	< 0.1%
1035.8	1	< 0.1%
1035.7	1	< 0.1%
1035.6	1	< 0.1%
1035.5	1	< 0.1%

DEWP
Real number (ℝ)

HIGH CORRELATION

Distinct	602
Distinct (%)	1.7%
Missing	53
Missing (%)	0.2%
Infinite	0
Infinite (%)	0.0%
Mean	1.5054954

Minimum	-35.1
Maximum	27.2
Zeros	66
Zeros (%)	0.2%
Negative	16287
Negative (%)	46.4%
Memory size	274.1 KiB

Quantile statistics

Minimum	-35.1
5-th percentile	-20.5
Q1	-10.2
median	1.8
Q3	14.2
95-th percentile	21.4
Maximum	27.2
Range	62.3
Interquartile range (IQR)	24.4

Descriptive statistics

Standard deviation	13.822099
Coefficient of variation (CV)	9.1810966
Kurtosis	-1.176748
Mean	1.5054954
Median Absolute Deviation (MAD)	12.3
Skewness	-0.14823158
Sum	52708.9
Variance	191.05042
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
16.6	137	0.4%
15	133	0.4%
15.7	126	0.4%
16.1	122	0.3%
15.3	120	0.3%
16.8	120	0.3%
16.7	119	0.3%
15.8	118	0.3%
17.5	116	0.3%
16.2	116	0.3%
Other values (592)	33784	96.3%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
-35.1	1	< 0.1%
-34.4	2	< 0.1%
-34.2	1	< 0.1%
-33.8	2	< 0.1%
-33.7	1	< 0.1%
-33.5	1	< 0.1%
-33.4	1	< 0.1%
-33	2	< 0.1%
-32.8	1	< 0.1%
-32.5	1	< 0.1%

Value	Count	Frequency (%)
27.2	2	< 0.1%
27.1	2	< 0.1%
27	2	< 0.1%
26.9	5	< 0.1%
26.8	4	< 0.1%
26.7	2	< 0.1%
26.6	3	< 0.1%
26.5	1	< 0.1%
26.4	5	< 0.1%
26.3	10	< 0.1%

RAIN
Real number (ℝ)

SKEWED ZEROS

Distinct	116
Distinct (%)	0.3%
Missing	51
Missing (%)	0.1%
Infinite	0
Infinite (%)	0.0%
Mean	0.06036615

Minimum	0
Maximum	52.1
Zeros	33663
Zeros (%)	96.0%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	0
5-th percentile	0
Q1	0
median	0
Q3	0
95-th percentile	0
Maximum	52.1
Range	52.1
Interquartile range (IQR)	0

Descriptive statistics

Standard deviation	0.75289931
Coefficient of variation (CV)	12.47221
Kurtosis	1270.9726
Mean	0.06036615
Median Absolute Deviation (MAD)	0
Skewness	29.569063
Sum	2113.6
Variance	0.56685737
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
0	33663	96.0%
0.1	287	0.8%
0.2	146	0.4%
0.3	122	0.3%
0.5	79	0.2%
0.4	71	0.2%
0.7	52	0.1%
0.6	44	0.1%
0.9	42	0.1%
1	42	0.1%
Other values (106)	465	1.3%
(Missing)	51	0.1%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	33663	96.0%
0.1	287	0.8%
0.2	146	0.4%
0.3	122	0.3%
0.4	71	0.2%
0.5	79	0.2%
0.6	44	0.1%
0.7	52	0.1%
0.8	42	0.1%
0.9	42	0.1%

Value	Count	Frequency (%)
52.1	1	< 0.1%
37.4	1	< 0.1%
28.9	1	< 0.1%
28.7	1	< 0.1%
26.5	1	< 0.1%
25.3	1	< 0.1%
23.7	1	< 0.1%
22.7	1	< 0.1%
22.3	1	< 0.1%
21.6	1	< 0.1%

wd
Categorical

Distinct	16
Distinct (%)	< 0.1%
Missing	140
Missing (%)	0.4%
Memory size	274.1 KiB

NNW	4776
NW	3838
N	3777
WNW	2877
ESE	2786
Other values (11)	16870

Length

Max length	3
Median length	2
Mean length	2.2299278
Min length	1

Characters and Unicode

Total characters	77878
Distinct characters	4
Distinct categories	1 ?
Distinct scripts	1 ?
Distinct blocks	1 ?

The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique	0 ?
Unique (%)	0.0%

Sample

1st row	E
2nd row	ENE
3rd row	ENE
4th row	NNE
5th row	N

Common Values

Value	Count	Frequency (%)
NNW	4776	13.6%
NW	3838	10.9%
N	3777	10.8%
WNW	2877	8.2%
ESE	2786	7.9%
E	2427	6.9%
NNE	1919	5.5%
SSE	1853	5.3%
SE	1823	5.2%
NE	1721	4.9%
Other values (6)	7127	20.3%

Length

Histogram of lengths of the category

Value	Count	Frequency (%)
nnw	4776	13.7%
nw	3838	11.0%
n	3777	10.8%
wnw	2877	8.2%
ese	2786	8.0%
e	2427	6.9%
nne	1919	5.5%
sse	1853	5.3%
se	1823	5.2%
ne	1721	4.9%
Other values (6)	7127	20.4%

Most occurring characters

Value	Count	Frequency (%)
N	26908	34.6%
W	19194	24.6%
E	17925	23.0%
S	13851	17.8%

Most occurring categories

Value	Count	Frequency (%)
Uppercase Letter	77878	100.0%

Most frequent character per category

Uppercase Letter

Value	Count	Frequency (%)
N	26908	34.6%
W	19194	24.6%
E	17925	23.0%
S	13851	17.8%

Most occurring scripts

Value	Count	Frequency (%)
Latin	77878	100.0%

Most frequent character per script

Latin

Value	Count	Frequency (%)
N	26908	34.6%
W	19194	24.6%
E	17925	23.0%
S	13851	17.8%

Most occurring blocks

Value	Count	Frequency (%)
ASCII	77878	100.0%

Most frequent character per block

ASCII

Value	Count	Frequency (%)
N	26908	34.6%
W	19194	24.6%
E	17925	23.0%
S	13851	17.8%

WSPM
Real number (ℝ)

ZEROS

Distinct	95
Distinct (%)	0.3%
Missing	43
Missing (%)	0.1%
Infinite	0
Infinite (%)	0.0%
Mean	1.8538363

Minimum	0
Maximum	10
Zeros	417
Zeros (%)	1.2%
Negative	0
Negative (%)	0.0%
Memory size	274.1 KiB

Quantile statistics

Minimum	0
5-th percentile	0.5
Q1	1
median	1.5
Q3	2.3
95-th percentile	4.7
Maximum	10
Range	10
Interquartile range (IQR)	1.3

Descriptive statistics

Standard deviation	1.3098083
Coefficient of variation (CV)	0.70653938
Kurtosis	3.2071389
Mean	1.8538363
Median Absolute Deviation (MAD)	0.6
Skewness	1.6592831
Sum	64923.2
Variance	1.7155979
Monotonicity	Not monotonic

Histogram with fixed size bins (bins=50)

Value	Count	Frequency (%)
1.2	1934	5.5%
1.1	1928	5.5%
1	1922	5.5%
1.3	1859	5.3%
0.9	1787	5.1%
1.4	1589	4.5%
0.8	1569	4.5%
1.5	1524	4.3%
1.6	1443	4.1%
0.7	1351	3.9%
Other values (85)	18115	51.7%

Minimum 10 values
Maximum 10 values

Value	Count	Frequency (%)
0	417	1.2%
0.1	201	0.6%
0.2	215	0.6%
0.3	157	0.4%
0.4	474	1.4%
0.5	722	2.1%
0.6	1043	3.0%
0.7	1351	3.9%
0.8	1569	4.5%
0.9	1787	5.1%

Value	Count	Frequency (%)
10	1	< 0.1%
9.6	3	< 0.1%
9.4	1	< 0.1%
9.3	3	< 0.1%
9.2	3	< 0.1%
9.1	1	< 0.1%
9	1	< 0.1%
8.8	3	< 0.1%
8.6	2	< 0.1%
8.5	7	< 0.1%

station
Categorical

CONSTANT

Distinct	1
Distinct (%)	< 0.1%
Missing	0
Missing (%)	0.0%
Memory size	274.1 KiB

Changping	35064

Length

Max length	9
Median length	9
Mean length	9
Min length	9

Characters and Unicode

Total characters	315576
Distinct characters	7
Distinct categories	2 ?
Distinct scripts	1 ?
Distinct blocks	1 ?

The Unicode Standard assigns character properties to each code point, which can be used to analyse textual variables.

Unique

Unique	0 ?
Unique (%)	0.0%

Sample

1st row	Changping
2nd row	Changping
3rd row	Changping
4th row	Changping
5th row	Changping

Common Values

Value	Count	Frequency (%)
Changping	35064	100.0%

Length

Histogram of lengths of the category

Common Values (Plot)

Value	Count	Frequency (%)
changping	35064	100.0%

Most occurring characters

Value	Count	Frequency (%)
n	70128	22.2%
g	70128	22.2%
C	35064	11.1%
h	35064	11.1%
a	35064	11.1%
p	35064	11.1%
i	35064	11.1%

Most occurring categories

Value	Count	Frequency (%)
Lowercase Letter	280512	88.9%
Uppercase Letter	35064	11.1%

Most frequent character per category

Lowercase Letter

Value	Count	Frequency (%)
n	70128	25.0%
g	70128	25.0%
h	35064	12.5%
a	35064	12.5%
p	35064	12.5%
i	35064	12.5%

Uppercase Letter

Value	Count	Frequency (%)
C	35064	100.0%

Most occurring scripts

Value	Count	Frequency (%)
Latin	315576	100.0%

Most frequent character per script

Latin

Value	Count	Frequency (%)
n	70128	22.2%
g	70128	22.2%
C	35064	11.1%
h	35064	11.1%
a	35064	11.1%
p	35064	11.1%
i	35064	11.1%

Most occurring blocks

Value	Count	Frequency (%)
ASCII	315576	100.0%

Most frequent character per block

ASCII

Value	Count	Frequency (%)
n	70128	22.2%
g	70128	22.2%
C	35064	11.1%
h	35064	11.1%
a	35064	11.1%
p	35064	11.1%
i	35064	11.1%

Auto

Heatmap
Table

	CO	DEWP	NO2	No	O3	PM10	PM2.5	PRES	RAIN	SO2	TEMP	WSPM	day	hour	month	wd	year
CO	1.000	0.033	0.730	0.024	-0.437	0.717	0.823	0.169	0.015	0.522	-0.269	-0.373	-0.019	-0.002	0.043	0.071	0.065
DEWP	0.033	1.000	-0.137	-0.082	0.329	0.106	0.218	-0.770	0.182	-0.432	0.820	-0.237	0.025	0.000	0.258	0.108	0.150
NO2	0.730	-0.137	1.000	0.047	-0.619	0.620	0.640	0.259	-0.052	0.489	-0.359	-0.372	0.015	0.022	0.025	0.052	0.061
No	0.024	-0.082	0.047	1.000	-0.146	-0.076	-0.070	0.164	0.019	-0.261	-0.130	0.081	0.018	0.001	0.044	0.100	0.862
O3	-0.437	0.329	-0.619	-0.146	1.000	-0.156	-0.221	-0.504	-0.038	-0.240	0.634	0.374	-0.017	0.241	-0.175	0.139	0.070
PM10	0.717	0.106	0.620	-0.076	-0.156	1.000	0.884	-0.055	-0.072	0.444	-0.032	-0.211	0.026	0.096	-0.046	0.077	0.064
PM2.5	0.823	0.218	0.640	-0.070	-0.221	0.884	1.000	-0.058	-0.004	0.434	-0.035	-0.330	0.012	0.038	-0.000	0.074	0.062
PRES	0.169	-0.770	0.259	0.164	-0.504	-0.055	-0.058	1.000	-0.077	0.347	-0.841	0.038	0.019	-0.040	0.011	0.073	0.144
RAIN	0.015	0.182	-0.052	0.019	-0.038	-0.072	-0.004	-0.077	1.000	-0.155	0.032	-0.051	-0.004	0.007	0.053	0.014	0.006
SO2	0.522	-0.432	0.489	-0.261	-0.240	0.444	0.434	0.347	-0.155	1.000	-0.413	-0.029	-0.000	0.045	-0.216	0.037	0.113
TEMP	-0.269	0.820	-0.359	-0.130	0.634	-0.032	-0.035	-0.841	0.032	-0.413	1.000	0.083	0.015	0.143	0.126	0.120	0.150
WSPM	-0.373	-0.237	-0.372	0.081	0.374	-0.211	-0.330	0.038	-0.051	-0.029	0.083	1.000	-0.015	0.139	-0.130	0.180	0.077
day	-0.019	0.025	0.015	0.018	-0.017	0.026	0.012	0.019	-0.004	-0.000	0.015	-0.015	1.000	0.000	0.010	0.026	0.000
hour	-0.002	0.000	0.022	0.001	0.241	0.096	0.038	-0.040	0.007	0.045	0.143	0.139	0.000	1.000	0.000	0.167	0.000
month	0.043	0.258	0.025	0.044	-0.175	-0.046	-0.000	0.011	0.053	-0.216	0.126	-0.130	0.010	0.000	1.000	0.085	0.249
wd	0.071	0.108	0.052	0.100	0.139	0.077	0.074	0.073	0.014	0.037	0.120	0.180	0.026	0.167	0.085	1.000	0.103
year	0.065	0.150	0.061	0.862	0.070	0.064	0.062	0.144	0.006	0.113	0.150	0.077	0.000	0.000	0.249	0.103	1.000

A simple visualization of nullity by column.

Nullity matrix is a data-dense display which lets you quickly visually pick out patterns in data completion.

The correlation heatmap measures nullity correlation: how strongly the presence or absence of one variable affects the presence of another.

First rows
Last rows

	No	year	month	day	hour	PM2.5	PM10	SO2	NO2	CO	O3	TEMP	PRES	DEWP	wd	WSPM	station
0	1	2013	3	1	0	3.0	6.0	13.0	7.0	300.0	85.0	-2.3	1020.8	-19.7	E	0.5	Changping
1	2	2013	3	1	1	3.0	3.0	6.0	6.0	300.0	85.0	-2.5	1021.3	-19.0	ENE	0.7	Changping
2	3	2013	3	1	2	3.0	3.0	22.0	13.0	400.0	74.0	-3.0	1021.3	-19.9	ENE	0.2	Changping
3	4	2013	3	1	3	3.0	6.0	12.0	8.0	300.0	81.0	-3.6	1021.8	-19.1	NNE	1.0	Changping
4	5	2013	3	1	4	3.0	3.0	14.0	8.0	300.0	81.0	-3.5	1022.3	-19.4	N	2.1	Changping
5	6	2013	3	1	5	3.0	3.0	10.0	17.0	400.0	71.0	-4.5	1022.6	-19.5	NNW	1.7	Changping
6	7	2013	3	1	6	4.0	6.0	12.0	22.0	500.0	65.0	-4.5	1023.4	-19.5	NNW	1.8	Changping
7	8	2013	3	1	7	3.0	6.0	25.0	39.0	600.0	48.0	-2.1	1024.6	-20.0	NW	2.5	Changping
8	9	2013	3	1	8	9.0	25.0	13.0	42.0	700.0	46.0	-0.2	1025.2	-20.5	NNW	2.8	Changping
9	10	2013	3	1	9	11.0	29.0	5.0	18.0	500.0	73.0	0.6	1025.3	-20.4	NNW	3.8	Changping

	No	year	month	day	hour	PM2.5	PM10	SO2	NO2	CO	O3	TEMP	PRES	DEWP	wd	WSPM	station
35054	35055	2017	2	28	14	8.0	15.0	5.0	18.0	400.0	70.0	14.9	1008.4	-12.4	WNW	4.2	Changping
35055	35056	2017	2	28	15	13.0	29.0	6.0	21.0	400.0	70.0	15.6	1007.6	-12.8	WNW	3.2	Changping
35056	35057	2017	2	28	16	15.0	37.0	6.0	22.0	400.0	70.0	15.4	1007.2	-12.9	WNW	4.4	Changping
35057	35058	2017	2	28	17	18.0	61.0	6.0	29.0	400.0	51.0	14.7	1007.4	-12.6	WNW	4.2	Changping
35058	35059	2017	2	28	18	18.0	57.0	NaN	2.0	NaN	2.0	13.4	1008.1	-13.6	WNW	3.0	Changping
35059	35060	2017	2	28	19	28.0	47.0	4.0	14.0	300.0	NaN	11.7	1008.9	-13.3	NNE	1.3	Changping
35060	35061	2017	2	28	20	12.0	12.0	3.0	23.0	500.0	64.0	10.9	1009.0	-14.0	N	2.1	Changping
35061	35062	2017	2	28	21	7.0	23.0	5.0	17.0	500.0	68.0	9.5	1009.4	-13.0	N	1.5	Changping
35062	35063	2017	2	28	22	11.0	20.0	3.0	15.0	500.0	72.0	7.8	1009.6	-12.6	NW	1.4	Changping
35063	35064	2017	2	28	23	20.0	25.0	6.0	28.0	900.0	54.0	7.0	1009.4	-12.2	N	1.9	Changping

Overview

Variables

Common Values

Length

Common Values (Plot)

Most occurring characters

Most occurring categories

Most frequent character per category

Decimal Number

Most occurring scripts

Most frequent character per script

Common

Most occurring blocks

Most frequent character per block

ASCII

Common Values

Length

Most occurring characters

Most occurring categories

Most frequent character per category

Uppercase Letter

Most occurring scripts

Most frequent character per script

Latin

Most occurring blocks

Most frequent character per block

ASCII

Common Values

Length

Common Values (Plot)

Most occurring characters

Most occurring categories

Most frequent character per category

Lowercase Letter

Uppercase Letter

Most occurring scripts

Most frequent character per script

Latin

Most occurring blocks

Most frequent character per block

ASCII

Interactions

Correlations

Missing values

Sample